For my M.Sc project, I developed a scoring function to evaluate the performance of four widely used RNA-Seq differential expression packages (DESeq2, edgeR, limma+voom, and BaySeq). The aim was to compare and assess the results of each package and determine the optimal approach for detecting differentially expressed genes (DEGs). By developing this function, we aimed to provide researchers with a tool to maximize or restrict the number of detected DEGs based on their criteria.